Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
thong dung » thong cong, thong thuong
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh vat » trinh vat, sinh vat, tinh va
dan phan » doan phan, dan chan, van phan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - hanh tinh vat ((thong dung) or (nhung phuong)) dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - hanh tinh vat ((thong dung) OR (nhung phuong)) dan phan tu*.